./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f3d0efaf33b93df425f185e68aa4bb5fd862b42784228ced2cb70c663695e18 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:38:08,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:38:08,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:38:08,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:38:08,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:38:08,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:38:08,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:38:08,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:38:08,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:38:08,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:38:08,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:38:08,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:38:08,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:38:08,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:38:08,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:38:08,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:38:08,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:38:08,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:38:08,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:38:08,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:38:09,000 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:38:09,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:38:09,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:38:09,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:38:09,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:38:09,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:38:09,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:38:09,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:38:09,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:38:09,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:38:09,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:38:09,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:38:09,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:38:09,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:38:09,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:38:09,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:38:09,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:38:09,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:38:09,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:38:09,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:38:09,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:38:09,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:38:09,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:38:09,037 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:38:09,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:38:09,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:38:09,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:38:09,038 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:38:09,038 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:38:09,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:38:09,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:38:09,039 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:38:09,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:38:09,039 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:38:09,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:38:09,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:38:09,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:38:09,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:38:09,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:38:09,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:38:09,040 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:38:09,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:38:09,041 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:38:09,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:38:09,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:38:09,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:38:09,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:38:09,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:38:09,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:38:09,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:38:09,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:38:09,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:38:09,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:38:09,043 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:38:09,043 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:38:09,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:38:09,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f3d0efaf33b93df425f185e68aa4bb5fd862b42784228ced2cb70c663695e18 [2022-07-12 09:38:09,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:38:09,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:38:09,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:38:09,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:38:09,254 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:38:09,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c [2022-07-12 09:38:09,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da34a4dec/dc1d97b644c6404a9f22a0a2bbee4306/FLAG6f0f86f94 [2022-07-12 09:38:09,685 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:38:09,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c [2022-07-12 09:38:09,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da34a4dec/dc1d97b644c6404a9f22a0a2bbee4306/FLAG6f0f86f94 [2022-07-12 09:38:09,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da34a4dec/dc1d97b644c6404a9f22a0a2bbee4306 [2022-07-12 09:38:09,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:38:09,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:38:09,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:38:09,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:38:09,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:38:09,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:38:09" (1/1) ... [2022-07-12 09:38:09,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f696dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:09, skipping insertion in model container [2022-07-12 09:38:09,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:38:09" (1/1) ... [2022-07-12 09:38:09,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:38:09,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:38:09,888 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[1996,2009] [2022-07-12 09:38:09,892 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[2390,2403] [2022-07-12 09:38:09,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:38:09,941 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:38:09,950 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[1996,2009] [2022-07-12 09:38:09,951 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[2390,2403] [2022-07-12 09:38:09,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:38:09,986 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:38:09,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:09 WrapperNode [2022-07-12 09:38:09,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:38:09,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:38:09,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:38:09,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:38:09,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:09" (1/1) ... [2022-07-12 09:38:10,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:09" (1/1) ... [2022-07-12 09:38:10,024 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 235 [2022-07-12 09:38:10,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:38:10,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:38:10,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:38:10,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:38:10,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:09" (1/1) ... [2022-07-12 09:38:10,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:09" (1/1) ... [2022-07-12 09:38:10,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:09" (1/1) ... [2022-07-12 09:38:10,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:09" (1/1) ... [2022-07-12 09:38:10,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:09" (1/1) ... [2022-07-12 09:38:10,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:09" (1/1) ... [2022-07-12 09:38:10,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:09" (1/1) ... [2022-07-12 09:38:10,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:38:10,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:38:10,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:38:10,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:38:10,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:09" (1/1) ... [2022-07-12 09:38:10,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:38:10,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:38:10,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:38:10,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:38:10,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:38:10,120 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-12 09:38:10,120 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-12 09:38:10,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:38:10,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:38:10,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:38:10,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 09:38:10,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 09:38:10,180 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:38:10,181 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:38:10,480 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:38:10,490 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:38:10,490 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:38:10,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:38:10 BoogieIcfgContainer [2022-07-12 09:38:10,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:38:10,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:38:10,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:38:10,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:38:10,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:38:09" (1/3) ... [2022-07-12 09:38:10,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98579ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:38:10, skipping insertion in model container [2022-07-12 09:38:10,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:09" (2/3) ... [2022-07-12 09:38:10,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98579ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:38:10, skipping insertion in model container [2022-07-12 09:38:10,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:38:10" (3/3) ... [2022-07-12 09:38:10,500 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_1-2a.c.cil.c [2022-07-12 09:38:10,509 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:38:10,510 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:38:10,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:38:10,585 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3e399dc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@29b09227 [2022-07-12 09:38:10,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:38:10,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 102 states have (on average 1.7058823529411764) internal successors, (174), 106 states have internal predecessors, (174), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 09:38:10,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:38:10,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:10,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:10,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:10,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-12 09:38:10,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:10,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127165965] [2022-07-12 09:38:10,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:10,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:10,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:10,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:10,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127165965] [2022-07-12 09:38:10,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127165965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:10,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:10,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:38:10,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784013744] [2022-07-12 09:38:10,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:10,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:38:10,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:10,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:38:10,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:38:10,745 INFO L87 Difference]: Start difference. First operand has 115 states, 102 states have (on average 1.7058823529411764) internal successors, (174), 106 states have internal predecessors, (174), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:38:10,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:10,791 INFO L93 Difference]: Finished difference Result 225 states and 380 transitions. [2022-07-12 09:38:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:38:10,793 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-12 09:38:10,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:10,799 INFO L225 Difference]: With dead ends: 225 [2022-07-12 09:38:10,800 INFO L226 Difference]: Without dead ends: 108 [2022-07-12 09:38:10,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:38:10,807 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:10,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:38:10,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-07-12 09:38:10,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-07-12 09:38:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 96 states have (on average 1.5104166666666667) internal successors, (145), 99 states have internal predecessors, (145), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-12 09:38:10,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 160 transitions. [2022-07-12 09:38:10,852 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 160 transitions. Word has length 7 [2022-07-12 09:38:10,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:10,852 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 160 transitions. [2022-07-12 09:38:10,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:38:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 160 transitions. [2022-07-12 09:38:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:38:10,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:10,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:10,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:38:10,855 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:10,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-12 09:38:10,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:10,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682574744] [2022-07-12 09:38:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:10,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:38:10,881 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 09:38:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:38:10,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 09:38:10,919 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 09:38:10,920 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 09:38:10,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 09:38:10,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:38:10,925 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 09:38:10,928 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 09:38:10,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 09:38:10 BoogieIcfgContainer [2022-07-12 09:38:10,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 09:38:10,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 09:38:10,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 09:38:10,952 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 09:38:10,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:38:10" (3/4) ... [2022-07-12 09:38:10,965 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 09:38:10,965 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 09:38:10,966 INFO L158 Benchmark]: Toolchain (without parser) took 1261.86ms. Allocated memory was 86.0MB in the beginning and 115.3MB in the end (delta: 29.4MB). Free memory was 48.8MB in the beginning and 90.5MB in the end (delta: -41.7MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2022-07-12 09:38:10,967 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory was 65.4MB in the beginning and 65.3MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:38:10,969 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.02ms. Allocated memory was 86.0MB in the beginning and 115.3MB in the end (delta: 29.4MB). Free memory was 48.6MB in the beginning and 85.3MB in the end (delta: -36.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 09:38:10,970 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.24ms. Allocated memory is still 115.3MB. Free memory was 85.3MB in the beginning and 83.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:38:10,989 INFO L158 Benchmark]: Boogie Preprocessor took 20.53ms. Allocated memory is still 115.3MB. Free memory was 83.2MB in the beginning and 81.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:38:10,989 INFO L158 Benchmark]: RCFGBuilder took 446.08ms. Allocated memory is still 115.3MB. Free memory was 81.2MB in the beginning and 60.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-12 09:38:10,990 INFO L158 Benchmark]: TraceAbstraction took 458.01ms. Allocated memory is still 115.3MB. Free memory was 59.5MB in the beginning and 34.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-07-12 09:38:10,990 INFO L158 Benchmark]: Witness Printer took 13.40ms. Allocated memory is still 115.3MB. Free memory was 34.2MB in the beginning and 90.5MB in the end (delta: -56.2MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2022-07-12 09:38:10,996 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory was 65.4MB in the beginning and 65.3MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.02ms. Allocated memory was 86.0MB in the beginning and 115.3MB in the end (delta: 29.4MB). Free memory was 48.6MB in the beginning and 85.3MB in the end (delta: -36.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.24ms. Allocated memory is still 115.3MB. Free memory was 85.3MB in the beginning and 83.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.53ms. Allocated memory is still 115.3MB. Free memory was 83.2MB in the beginning and 81.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.08ms. Allocated memory is still 115.3MB. Free memory was 81.2MB in the beginning and 60.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 458.01ms. Allocated memory is still 115.3MB. Free memory was 59.5MB in the beginning and 34.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 13.40ms. Allocated memory is still 115.3MB. Free memory was 34.2MB in the beginning and 90.5MB in the end (delta: -56.2MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 115 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 169 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 169 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-12 09:38:11,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f3d0efaf33b93df425f185e68aa4bb5fd862b42784228ced2cb70c663695e18 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:38:12,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:38:12,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:38:12,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:38:12,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:38:12,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:38:12,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:38:12,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:38:12,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:38:12,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:38:12,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:38:12,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:38:12,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:38:12,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:38:12,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:38:12,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:38:12,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:38:12,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:38:12,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:38:12,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:38:12,626 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:38:12,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:38:12,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:38:12,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:38:12,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:38:12,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:38:12,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:38:12,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:38:12,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:38:12,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:38:12,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:38:12,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:38:12,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:38:12,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:38:12,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:38:12,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:38:12,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:38:12,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:38:12,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:38:12,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:38:12,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:38:12,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:38:12,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 09:38:12,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:38:12,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:38:12,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:38:12,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:38:12,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:38:12,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:38:12,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:38:12,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:38:12,683 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:38:12,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:38:12,684 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:38:12,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:38:12,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:38:12,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:38:12,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:38:12,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:38:12,685 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 09:38:12,685 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 09:38:12,685 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 09:38:12,685 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:38:12,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:38:12,685 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:38:12,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:38:12,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:38:12,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:38:12,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:38:12,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:38:12,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:38:12,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:38:12,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:38:12,687 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 09:38:12,687 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 09:38:12,687 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:38:12,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:38:12,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:38:12,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 09:38:12,688 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f3d0efaf33b93df425f185e68aa4bb5fd862b42784228ced2cb70c663695e18 [2022-07-12 09:38:12,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:38:12,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:38:12,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:38:12,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:38:13,001 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:38:13,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c [2022-07-12 09:38:13,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b05e5a69e/2fedf400df4c4da0aa7189707439c67a/FLAGe7220e0cc [2022-07-12 09:38:13,437 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:38:13,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c [2022-07-12 09:38:13,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b05e5a69e/2fedf400df4c4da0aa7189707439c67a/FLAGe7220e0cc [2022-07-12 09:38:13,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b05e5a69e/2fedf400df4c4da0aa7189707439c67a [2022-07-12 09:38:13,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:38:13,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:38:13,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:38:13,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:38:13,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:38:13,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:38:13" (1/1) ... [2022-07-12 09:38:13,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac9397f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:13, skipping insertion in model container [2022-07-12 09:38:13,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:38:13" (1/1) ... [2022-07-12 09:38:13,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:38:13,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:38:13,630 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[1996,2009] [2022-07-12 09:38:13,634 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[2390,2403] [2022-07-12 09:38:13,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:38:13,680 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:38:13,702 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[1996,2009] [2022-07-12 09:38:13,707 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[2390,2403] [2022-07-12 09:38:13,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:38:13,750 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:38:13,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:13 WrapperNode [2022-07-12 09:38:13,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:38:13,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:38:13,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:38:13,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:38:13,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:13" (1/1) ... [2022-07-12 09:38:13,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:13" (1/1) ... [2022-07-12 09:38:13,801 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2022-07-12 09:38:13,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:38:13,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:38:13,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:38:13,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:38:13,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:13" (1/1) ... [2022-07-12 09:38:13,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:13" (1/1) ... [2022-07-12 09:38:13,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:13" (1/1) ... [2022-07-12 09:38:13,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:13" (1/1) ... [2022-07-12 09:38:13,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:13" (1/1) ... [2022-07-12 09:38:13,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:13" (1/1) ... [2022-07-12 09:38:13,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:13" (1/1) ... [2022-07-12 09:38:13,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:38:13,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:38:13,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:38:13,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:38:13,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:13" (1/1) ... [2022-07-12 09:38:13,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:38:13,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:38:13,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:38:13,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:38:13,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:38:13,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 09:38:13,905 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-12 09:38:13,905 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-12 09:38:13,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:38:13,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:38:13,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 09:38:13,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 09:38:13,979 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:38:13,981 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:38:16,524 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:38:16,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:38:16,532 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:38:16,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:38:16 BoogieIcfgContainer [2022-07-12 09:38:16,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:38:16,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:38:16,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:38:16,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:38:16,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:38:13" (1/3) ... [2022-07-12 09:38:16,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e6fe01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:38:16, skipping insertion in model container [2022-07-12 09:38:16,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:38:13" (2/3) ... [2022-07-12 09:38:16,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e6fe01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:38:16, skipping insertion in model container [2022-07-12 09:38:16,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:38:16" (3/3) ... [2022-07-12 09:38:16,538 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_1-2a.c.cil.c [2022-07-12 09:38:16,547 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:38:16,547 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:38:16,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:38:16,596 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@535f5034, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@261c32d6 [2022-07-12 09:38:16,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:38:16,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 09:38:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:38:16,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:16,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:16,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:16,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:16,607 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-12 09:38:16,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 09:38:16,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433465377] [2022-07-12 09:38:16,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:16,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 09:38:16,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 09:38:16,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 09:38:16,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 09:38:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:17,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 09:38:17,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:38:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:17,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:38:17,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 09:38:17,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433465377] [2022-07-12 09:38:17,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433465377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:17,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:17,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:38:17,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210037355] [2022-07-12 09:38:17,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:17,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:38:17,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 09:38:17,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:38:17,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:38:17,053 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:38:17,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:17,078 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2022-07-12 09:38:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:38:17,080 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-12 09:38:17,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:17,085 INFO L225 Difference]: With dead ends: 157 [2022-07-12 09:38:17,085 INFO L226 Difference]: Without dead ends: 74 [2022-07-12 09:38:17,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:38:17,090 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:17,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:38:17,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-12 09:38:17,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-07-12 09:38:17,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-12 09:38:17,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2022-07-12 09:38:17,121 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2022-07-12 09:38:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:17,121 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2022-07-12 09:38:17,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:38:17,121 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2022-07-12 09:38:17,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:38:17,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:17,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:17,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 09:38:17,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 09:38:17,323 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:17,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:17,324 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-12 09:38:17,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 09:38:17,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863562653] [2022-07-12 09:38:17,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:17,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 09:38:17,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 09:38:17,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 09:38:17,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 09:38:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:38:47,612 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 09:39:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:39:03,555 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-12 09:39:03,555 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 09:39:03,556 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 09:39:03,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 09:39:03,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:39:03,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 09:39:03,761 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 09:39:03,763 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 09:39:03,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 09:39:03 BoogieIcfgContainer [2022-07-12 09:39:03,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 09:39:03,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 09:39:03,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 09:39:03,781 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 09:39:03,782 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:38:16" (3/4) ... [2022-07-12 09:39:03,783 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 09:39:03,814 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 09:39:03,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 09:39:03,815 INFO L158 Benchmark]: Toolchain (without parser) took 50358.41ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 44.7MB in the beginning and 62.2MB in the end (delta: -17.5MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2022-07-12 09:39:03,817 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 45.8MB in the beginning and 45.7MB in the end (delta: 32.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:39:03,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.93ms. Allocated memory is still 65.0MB. Free memory was 44.5MB in the beginning and 42.7MB in the end (delta: 1.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 09:39:03,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.07ms. Allocated memory is still 65.0MB. Free memory was 42.4MB in the beginning and 40.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:39:03,818 INFO L158 Benchmark]: Boogie Preprocessor took 45.65ms. Allocated memory is still 65.0MB. Free memory was 40.6MB in the beginning and 38.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:39:03,818 INFO L158 Benchmark]: RCFGBuilder took 2684.81ms. Allocated memory is still 65.0MB. Free memory was 38.7MB in the beginning and 42.2MB in the end (delta: -3.5MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2022-07-12 09:39:03,822 INFO L158 Benchmark]: TraceAbstraction took 47246.10ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 41.6MB in the beginning and 63.8MB in the end (delta: -22.2MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2022-07-12 09:39:03,822 INFO L158 Benchmark]: Witness Printer took 33.87ms. Allocated memory is still 92.3MB. Free memory was 63.8MB in the beginning and 62.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:39:03,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 45.8MB in the beginning and 45.7MB in the end (delta: 32.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.93ms. Allocated memory is still 65.0MB. Free memory was 44.5MB in the beginning and 42.7MB in the end (delta: 1.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.07ms. Allocated memory is still 65.0MB. Free memory was 42.4MB in the beginning and 40.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.65ms. Allocated memory is still 65.0MB. Free memory was 40.6MB in the beginning and 38.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2684.81ms. Allocated memory is still 65.0MB. Free memory was 38.7MB in the beginning and 42.2MB in the end (delta: -3.5MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * TraceAbstraction took 47246.10ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 41.6MB in the beginning and 63.8MB in the end (delta: -22.2MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Witness Printer took 33.87ms. Allocated memory is still 92.3MB. Free memory was 63.8MB in the beginning and 62.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.9990203976631165, result=1.398161768913269, x=0.9990203976631165] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=0.9990203976631165, result=1.398161768913269, x=0.9990203976631165] [L48] reach_error() VAL [IN=0.9990203976631165, result=1.398161768913269, x=0.9990203976631165] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 47.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 116 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 116 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 30.6s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-12 09:39:03,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE